server.js

const express = require("express");
const cors = require("cors");
const mongoose = require("mongoose");
const path = require("path");
const cookieParser = require("cookie-parser");
require("dotenv").config();
var http = require("http");

const app = express();
const port = process.env.PORT || 8000;

app.use(cors({ credentials: true, origin: "http://localhost:3000" }));
app.use(cookieParser());
app.use(express.json());

const uri = process.env.ATLAS_URI;
mongoose.connect(uri, {
  useNewUrlParser: true,
  useCreateIndex: true,
  useUnifiedTopology: true
});

const connection = mongoose.connection;
connection.once("open", () => {
  console.log("MongoDB database connection established succesfully");
});

const usersRouter = require("./routes/users");
const mealsRouter = require("./routes/meals");

app.use("/users", usersRouter);
app.use("/meals", mealsRouter);

if (process.env.NODE_ENV === "production") {
  app.use(express.static("client/build"));
  app.get("*", (request, response) => {
    response.sendFile(path.join(__dirname, "client", "build", "index.html"));
  });
}

let server = http.createServer(app);

server.listen(port, () => {
  console.log(`Server is running on port: ${port}`);
});